Hull Bottom

A hull bottom features a rounded, displacement-style shape that sits deeper in the water, prioritizing smoothness and glide over lift. Unlike concaves that generate planing speed, a hull bottom tracks along a curved surface, encouraging forward trim and clean rail surfing. This contour excels in clean, down-the-line waves, where subtle weight shifts maintain momentum. Shapers tune hull depth and curvature to balance sensitivity, flow and the desired displacement feel.